Inheritance of Susceptibility to Ethametsulfuron Herbicide Muster in Summer Turnip Rape (<i>Brassica rapa</i> L.)
Bibliographic record
Abstract
The Brassica oilseed crops, Brassica rapa L., B. napus L., and B. juncea (L.) Czern. & Coss., carry the inherent property of tolerance to the acetolactate synthase–inhibiting herbicide ethametsulfuron. However, a self‐compatible line of B. rapa subsp. oleifera (DC.) Metzg. susceptible to this herbicide was isolated through single‐plant selection in a Canadian cultivar. The objective of the present study was to elucidate the genetic control of tolerance to this herbicide in B. rapa by using this susceptible line as a parent in crosses with tolerant lines. The susceptible line was crossed with two tolerant, self‐incompatible lines of oleiferous B. rapa The F 2 , B 1 (F 1 backcrossed to tolerant parent), B 2 (F 1 backcrossed to susceptible parent), F 3 , and B 1 S 1 generation populations were generated from the crosses and were evaluated for tolerance to ethametsulfuron. A single‐gene locus was found to be involved in the control of this trait, with the tolerant phenotype being completely dominant over the susceptible. No difference in tolerance was detected in the populations derived from reciprocal crosses, suggesting the absence of cytoplasmic effects in the control of this trait. As the parents differed for self‐incompatibility, segregation for this trait was found in the F 2 and backcross populations, as expected. However, self‐incompatibility allele(s) did not exert any influence on segregation of the locus controlling tolerance to ethametsulfuron.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".